body, html {
    height: 100%;
}

body {
    min-width: 600px;
    background: #242628;
    margin: 0;
    font-size: 14px;
    font-family: 'Hiragino Sans GB', 'Open Sans', 'Helvetica Neue', Helvetica, sans-serif;
}

.container {
    width: 100%;
    height: 100%;
    display: table;
}

.login-form {
    display: table-cell;
    height: 100%;
    margin: 0;
    padding: 0;
    padding-bottom: 2em;
    vertical-align: middle;
    text-align: center;
}

.textbox {
    width: 180px;
    background: #4b4b4b;
    border: none;
    color: #ececec;
    border-radius: 2px;
    padding: 6px 8px;
    margin: 0;
    height: 22px;
    line-height: 22px;
    font-size: inherit;
    font-family: inherit;
    outline: none;
    transition-duration: 0.4s;
}

.textbox:focus {
    background: #606060;
}

.button {
    background: #76aa09;
    border: none;
    border-radius: 2px;
    margin: 0;
    margin-left: 0.5em;
    padding: 0 10px;
    cursor: pointer;
    width: 70px;
    height: 34px;
    line-height: 34px;
    font-size: inherit;
    font-family: inherit;
    color: #f0f0f0;
    transition-duration: 0.4s;
}

.button:hover {
    color: #fff;
    background: #80bd01;
}